A double convex lens has two surfaces of...

A double convex lens has two surfaces of equal radii R and refractive index m=1.5, we have

`f=R/2`

`f=R`

`f=-R`

`f=2R`

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HC VERMA-GEOMETRICAL OPTICS-Objective 1

A point source of light is placed in front of a plane mirror.
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